body {
    background: #fff;
}

.container {
    max-width: 100%;
}

.list-container * {
    box-sizing: border-box;
}

.list-container h2,
.list-container h3,
.list-container p,
.list-container form {
    margin: 0;
    padding: 0;
    border: 0;
}

.list-container a {
    display: block;
    outline: none;
    text-decoration: none;
}

.list-container img {
    width: 100%;
}

.clear::after {
    display: block;
    content: "";
    width: 0;
    height: 0;
    font-size: 0;
    clear: both;
}

.banner-img {
    width: 100%;
    min-width: 1200px;
}

.courses {
    margin: 40px auto;
    width: 1200px;
}

.courses-hd {
    margin-bottom: 40px;
    width: 100%;
    padding: 0 20px;
    height: 52px;
    line-height: 52px;
    border: 1px solid #ccc;
    border-radius: 6px;
    overflow: hidden;
}

.courses-sort {
    float: left;
    font-size: 0;
}

.courses-sort > span,
.courses-sort > a {
    display: inline-block;
    margin-right: 40px;
    font-size: 14px;
    color: #333;
}

.courses-sort > a:hover {
    color: #1890ff;
}

.courses-sort > a.cur {
    color: #1890ff;
}

.courses-total {
    float: right;
    font-size: 14px;
}

.courses-total > span {
    color: #ff0000;
}

.course-list {
    margin-bottom: 20px;
    width: 100%;
}

.course,
.course-cover,
.course-info {
    transition: all .4s;
}

.course {
    float: left;
    position: relative;
    margin-right: 20px;
    margin-bottom: 20px;
    width: 285px;
    border: 1px solid #ccc;
}

.course:nth-of-type(4n) {
    margin-right: 0;
}

.course:hover {
    border-color: transparent;
    box-shadow: 2px 2px 14px -6px #ccc;
}

.course-cover,
.course-img {
    height: 190px;
}

.course-cover {
    position: absolute;
    top: 0;
    left: -1px;
    width: 285px;
    background: #333 url(/Public/Home/images/Video/course_opening.png) center/60px no-repeat;
    opacity: 0;
}

.course:hover .course-cover {
    opacity: .3;
}

.course-img {
    width: 100%;
}

.course-img img {
    height: 100%;
}

.course-info {
    padding: 10px;
    width: 100%;
}

.course-name {
    margin-bottom: 10px;
    width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 16px;
    font-weight: normal;
    color: #333;
}

.course-num,
.corese-length {
    font-size: 12px;
}

.course-num {
    float: left;
    color: #8c8c8c;
}

.corese-length {
    float: right;
    text-align: right;
    color: #ff9966;
}

.page div {
    font-size: 0;
    text-align: center;
}

.page div > a,
.page div > span {
    display: inline-block;
    margin: 0 10px;
    height: 40px;
    line-height: 40px;
    font-size: 16px;
    color: #333;
}

.page div > .num,
.page div > .current {
    width: 40px;
    border: 1px solid #ccc;
}

.page div > .num:hover,
.page div > .current {
    border-color: #1890ff;
    background: #1890ff;
    color: #fff;
}

.page div > .prev:hover,
.page div > .next:hover {
    color: #1890ff;
}